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(ModeL) 5 Sheets-Sheet 1.

J. E. KIMBALL.

WIRE NAIL MAKING MACHINE.

No. 395,062. I Patentd Dec. 25, 1888.

Wiirzevaw (ModeL) I 5 sheetwsneen L2.

J, E. KIMBALL. WIRE NAIL MAKING MACHINE.

No. 395,062. Patented Dec. 25, 1888.

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(ModeL) 5 Sheets-Sheet a. l

J. E. KIMBALL. WIRE NAIL, MAKING MACHINE. No. 395,062. Patented Dec. 25, 1888.

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PETERS Pfinlo-Lilhographen Washington, D, C.

(ModeL) f 5 Sheets-Sheet 4.

J. E. K'IMBALL. WIRE NAIL MAKING MACHINE.

No. 395,062. Patented Dec. 25, 1888.

Q meiai ar- (Model.) 7 V 5 Sheets-Shet. 5.

J. E. KIMBA-LL.

WIRE NAIL MAKING MACHINE.

Patented Dec 25, 1888.

UNITED STATES PATENT OFFICE.

S. JENKINS,

TRUSTEE.

WIRE-NAlL-MAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 395,062, dated December 25, 1888.

Application filed February 8, 188

To (all whom zit may concern.-

Be it known that I, JOSEPH E. KIMBALL, of Milford, iii the county of \Yorcester and State of h'lassachusetts, have invented certain new and useful Improvements in ll'ire-Nail- Making Machines, of which the following is a full, clear, concise, and exact description, reference being had to the accompanyin drawings, making a part hereof.

Nails with milled points have long been in the market under the name of clinchingserews and headed clinching screws. These nails are short pieces of wire, one end of which is milled to form a clinching-point, and are substantially alike, except that the headed cl inching-screw has a head of greater diameter than the rest of the nail. In the manufacture of these nails or clinchingscrews, as heretofore carried on a piece of wire of the proper length was cutoff from the wire as it came from the reel, and this short piece was afterward milled or milled and headed. This mode of manufacture required means for presenting and holding these short pieces of wire each in its turn to the milling-wheels.

The main feature of my invention is the milling of the points before the short piece of wire to form the nail is cut off.

Other features of my invention relate to the mechanism for forming these clinchingscrews, whether headless or headed. 7

In the accompanying drawings, which illustrate a nail-makingmachine embodying all my improvements in the best form known to me, Figure .l is a side elevation. Fig. 2 is a plan or top view. Fig. 3 is a transverse section on line :1: .r, Fig. 2. Fig. 4 is a horizontal section on line 1 y, Fig. 1. Fig. 5 is a front elevation of the upper part of Fig. 11. Figs. U and 7 are a front and side view of the clamps for holding the wire while being milled. Fig. 8 shows the wire as it is after it has passed the feed-foils and milling-wheels.

A is the frame or base. The main shaft 13 is mounted on one end of the frame A. The feed-rolls .l) I), grooved to conform to the desired configuration of the body of the nail, are mounted on the front end of the frame A and connected by gears (I, so as to revolve together. They receive an intermittent rotary 2. Serialll0.52,159. (Model) motion from the connecting-rod (7", attached at one end to the crank-pin if and at its other end to a lever, (7 which carries a pawl. d, that engages with a ratchet-w]icel, d, on the shaft of the lower roll, D. The teeth of this ratchet-wheel l" are proportioned to turn the rolls l) I) just enough to feed the length of a nail, and for different lengths of nails other ratchet and feed wheels are used and the throw of the crank adjusted to them by adjusting the crank-pin If in the slot l)"-that is, nearer to or farther from the axis of the main shaft 13.

Two milling-wheels, E E, are mounted on shafts provided with pulleys to receive belts, by which they are rapidly revolved, and are hung on the lower extremities of two vibrating levers, e c, which swing on the spindles 6 6 These spindles are mounted in boxes on the frame a, and are ad Justed in and out by the hand-screws e, which work in a thread tapped in the spindles c e, for adjusting the levers e e. lVhen adjusted, the spindles are firmly clamped in their boxes. These vibrating levers e e are mnneetcd at their upper ends by the spring (2, which keeps the milling-wheels away from each other to allowthc passage of the wire. These wheels are brought against the wire and made to graduallyapproach each other while forming the point by the descent of the wedge e, carried by the eross-heml e forcing apart the upper ends of the levers e c. The cross-head e is caused to reciprocate intermittently in its ways in the frame 6 by the bent lever e, pivoted to a standard on the frame A, and which is actuated in one direction by the cam 11 on the main shaft B, and in the other direction by the spring e as shown in Fig. l.

The wire is clamped while being milled, and the clamps are closed by two presserbars, c c, which move in guides in the crosshead 6 and are elastically held down by the cross-head c compressing a spring, 6 on each. (See Fig. 3.) These pressta-bars e e actuate the clamps f f which may be considered as the upper portions of the wireguideway on each side of the milling-wheels, these portions of the guideway being movable. The clamp f is hinged to the part f, as shown in Fig. 3, and the clamp f is adapted to move toward and away from the partf. back-stroke of wrist-pin h" the slides h h The wire is held for the aetion of the cutter move t )gether, the spring 79 insuring the I: by the elamps h [l and for the operation 5 motion of slide 71 until slide It is stopped by of the header II. by the gripping-dies 71 71.

lly ret'erenee to Fig. l the operations of the l elamps, eutters, grippi ng-dies, and header will drops out, and also separating elamp It from be clearly seen.

The stud It is linked to wrist-pin lron one arm of the reek-shaft II, which thereby operates the slide 71 in whieh is mounted the;

l nail without obstruction from elamps h ]L2 or spring-clamp It, the (utter l1, and one of the gripping-dies, 7L ping-die h are mounted on slide 71'. The slide 71 being moved by the stud If, earries with it the spring-(damp It, the eutter 71, and. the die It" until the bod vot' one nail is firmlw elamped between the elam'ps 71. and /1 The eontinued motion ot slide h moves elamp 11 against its spring, the elamps l1 and 11" moving together, earr ving with them the nail The blade If and the grip- Z elamped between them,and also earr vingone side of the milled point of the nail projeeting from them up against blade h. The farther motion olf slide IF eompresses the spring of clamp 7i, and also earries blade 11 up to the other sideotj' the milled point of the nail projeeting from the elamp l1 l1 and closes the p desirable to have both serewselamped l'ie'tore gripping-dies 71 it around the body of that nail, and during the latter part of the tot ward motion of slide it the blades 11 and it and the gripping-dies and the slide it all move together, earrying with them the nail, whieh is severed by the motion of the blade 71. This completes the nailin the manufacture ol" the headless elim-hing-serews; but it headed serews are to be made the motion of the slides 71 71 is so regulated and the sermv-stop 71 so adjusted that slide 71 will be stopped by stop It in time to eause the nail to be firmly gripped l. etw(-*en the dies 71 7t, and held in proper position for the aetion of the header Il, whieh is then thrown forward, upsetting the body of the headless nail pro- 'eeting from the dies h" It and lornling the head. When headless nails are made, these grip 'iing-dies 71 h" are not essential, but they are desirable, as the body of the nail is held by them when the blade 71 acts to sever it from the nail held by the clamps 71 7: The blade 7/ also is not essential, as will be obvious; but the maehine works better with it than without it, and it. serves to enable the gripping-dies 71 It to hold the nail. more firmly under the blow of the header. The

On the the serew-stop 71 but slide 71 continues its motion, thereby separating die h from d e It, and releasing the :tinished nail, whleh elamp ll'fl'and thereby allowing elamp 7&2 to

reassume its first position, so that the wire ean be fed "forward the length, of the next li'rom blade 71?. The wire is fed by the feedrolls the proper length for one nail, and corru gated, it desired, by the teed-rolls in a well known way. When the teedrolls are at rest, the wire is elamped near the plaee where the milling-wheels are to operate upon it and the milling-wheels are brought into operation to form the milled point and then withdrawn. The wire is then unelamped and fed forward, as before, then elan'iped again and milled as before, and so on, leaving the wire ready to be made into headless elineliing-serews by simply severing it at the junction of the milled point of one serew with the butt of another. To do this wit-h rapidity and without bending or otherwise injuring the points, it is the cutter operates.

I am aware of Elliotts patent, No. 1631059, of 1975, and disclaim all that is shown in it, Elliotts method differing wholly from mine in that the point is completed on the projectin g end of a wire while my point is first partially formed by removing portions of the 1 wire and finished by the severing-eutters.

\Vhat I claim as my invention is ii. In eonibination, wire-feeding meehanlsm,

cutters t'or partially forming the point, clampwire, substantially as described.

2. In combination, wire-feeding meehanism, milling-eutters E E, mechanism for clamping the wire while the point is milled, eut-ter l1, and mechanism to r clam pin g the wire while the (utter aets, substantially as and tor the purpose set forth.

2' ln eombination, elamps h and 71?, blade /1, and grippingalies 7H" and 71, substantially as and For the purpose set forth.

JOSEPH KIMBALL.

Witnesses:

J. E. Aiin'xanuzn, E. L. Wrens.

TIO 

